<template>
    <div>
        <!-- 面包屑导航 -->
         <el-breadcrumb separator="/">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>数据统计</el-breadcrumb-item>
            <el-breadcrumb-item>数据报表</el-breadcrumb-item>
         </el-breadcrumb>
         <!-- 卡片视图 -->
         <el-card>
            <!--2. 为 ECharts 准备一个具备大小（宽高）的 DOM -->
            <div id="main" style="width: 750px;height:400px;"></div>
         </el-card>
    </div>
</template>

<script>
//1. 导入echarts
import echarts from 'echarts'
import _ from 'lodash'

export default {
    data(){
        return {
            //需要合并的数据
            options: {
            title: {
            text: '用户来源'
            },
           tooltip: {
             trigger: 'axis',
             axisPointer: {
               type: 'cross',
               label: {
                 backgroundColor: '#E9EEF3'
               }
             }
           },
           grid: {
             left: '3%',
             right: '4%',
             bottom: '3%',
             containLabel: true
           },
           xAxis: [
             {
               boundaryGap: false
             }
           ],
            yAxis: [
           {
             type: 'value'
           }
          ]
         }
        }
    },
    created(){

    },
    //此时，页面上的图表已经被渲染好了
    async mounted(){
       // 3.基于准备好的dom，初始化echarts实例
       var myChart = echarts.init(document.getElementById('main'));
       
       //获取数据
       const {data:res}=await this.$http.get('reports/type/1')
       if(res.meta.status!==200){
           return this.$message.error('获取折线图数据失败')
       }

        // 4.准备数据和配置项
        //  var option = {
        //     title: {
        //         text: 'ECharts 入门示例'
        //     },
        //     tooltip: {},
        //     legend: {
        //         data:['销量']
        //     },
        //     xAxis: {
        //         data: ["衬衫","羊毛衫","雪纺衫","裤子","高跟鞋","袜子"]
        //     },
        //     yAxis: {},
        //     series: [{
        //         name: '销量',
        //         type: 'bar',
        //         data: [5, 20, 36, 10, 10, 20]
        //     }]
        // };
    
        
        const result=_.merge(res.data,this.options)
        
        
        // 5.展示数据
        myChart.setOption(result);
    },
    methods:{

    }
}
</script>

<style lang="less" scoped>

</style>

